.form{
  display: flex;
  transition: 0.4s;
}
.inputs-1{
  margin-right: 4%;
}
.inputs-2{
}
.inputs-1, .inputs-2{
  width: 48%;
  box-sizing: border-box;
  outline: none;
  display: flex;
  flex-direction: column;
  transition: 0.4s;
}
.inputs-1 .input,
.inputs-2 textarea{
  margin: 10px 0;
  background: transparent;
  border: 0px;
  border-bottom: 2px solid #edb4bb;
  padding: 10px;
  color: #2c3e50;
  width: 100%;
  outline: none;
  font-size: 16px;
  box-sizing: border-box;
}
.inputs-1 .input:focus,
.inputs-2 textarea:focus{
  outline: none;
  border-bottom: 2px solid #c3081d;
}
.inputs-2 textarea{
  height: 100%;
  resize: none;
}
.send{
  display: block;
  position: relative;
  background: #f39c12;
  text-align: center;
  font-weight: bold;
  font-size: 16px;
  height: 16px;
  padding: 15px;
  border-radius: 5px;
  color: #c0392b;
  cursor: pointer;
  overflow: hidden;
  text-transform: uppercase;
  transition: 1s all ease;
}
.send::before{
  background: #e67e22;
  content: "";
  width: 100%;
  height: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(45deg);
  border-radius: 5px;
  z-index: -1;
  transition: all 0.6s ease;
}
.send:hover::before{
  z-index: 1;
  height: 1000%;
}
.send span{
  display: block;
  z-index: 2;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

@media screen and (max-width:600px) {
  .form{
    flex-direction: column;
  }
  .inputs-2 textarea{
    height: 100px;
    resize: none;
  }
  .inputs-1, .inputs-2{
    width: 100%;
  }
}